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Watson season 2 episode 5, titled Lucky, reveals the truth about a long-term patient who was believed to be comatose for sixteen years. In the episode’s ending, Dr. John Watson discovers that Lucky is not in a coma but living with locked-in syndrome. This is a condition where the patient is fully conscious but unable to move or speak.
Through a blinking communication system, Lucky exposes a nurse who has been secretly killing patients. Before she can be stopped, the nurse injects him with a paralytic drug, leaving him trapped once again. With Sherlock’s brief return helping Watson track down the nurse, the episode ends with justice served, but questions about Sherlock’s secret mission are still unanswered.
Disclaimer: This article contains major spoilers for the series. Read at your own discretion.
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How did Watson discover Lucky’s condition in Watson season 2 episode 5?
In Watson season 2 episode 5, Dr. John Watson visits Van Kirk Memorial Hospital, where nurse Alicia Santos approaches him about a patient named Lewis “Lucky.” Lucky had been in the hospital’s long-term care unit for sixteen years after a stroke left him motionless. While most staff dismissed him as comatose, Alicia believed he was aware of his surroundings.
Watson examines Lucky and quickly identifies subtle eye movements that suggest cognitive awareness. Using basic yes-or-no communication through blinks, he confirms that Lucky is conscious and has a rare condition known as locked-in syndrome. This discovery shifts the entire course of the episode, turning what seemed like a routine case into a high-stakes medical and moral mystery.
As Watson investigates further, he learns that Lucky has been silently witnessing strange occurrences in his hospital ward. Through a careful series of questions, Lucky communicates that a nurse has been harming patients.
The nurse and Lucky’s fate
The final scene of Watson season 2 episode 5 centers on the confrontation between Lucky’s medical team and the nurse responsible for the patient deaths. Once Lucky’s accusations are confirmed, he is transferred to a different facility for protection and to participate in a new communication trial that could help him speak through a brain-computer interface.
However, the nurse learns of Lucky’s transfer and sneaks into the hospital to silence him. She injects him with a paralytic drug, not to kill him but to make him unable to communicate. When the team finds him unresponsive again, they initially believe his condition has worsened.
Meanwhile, Sherlock Holmes briefly returns to assist Watson. Using his trademark deductive reasoning and unconventional methods, Sherlock traces the nurse’s location and alerts the authorities by calling in a false bomb threat, forcing her out of hiding. She is arrested before she can flee the country.
Lucky survives the attack but remains paralyzed, symbolizing both the fragility of life in medicine and the dangers of being unheard. His case leaves Watson reflecting on how easily the truth can be overlooked, even within a world dedicated to saving lives.
How Sherlock’s return connects to the bigger mystery
Sherlock’s reappearance in Watson season 2 episode 5 raises new questions about his motives and current activities. Although his presence helps capture the nurse, he leaves before explaining where he has been or what mission he is pursuing. Sherlock is seen monitoring his brother Mycroft’s collapsing tech company, which may be tied to the new medical technology used in Lucky’s case.
Later, Mycroft arrives at the clinic, revealing that he now owns part of the hospital and intends to take control from Watson.
While Sherlock’s visit is brief, it hints that his work outside the clinic might intersect with the same network that produced the communication interface used for Lucky. The episode ends with Sherlock disappearing once again, leaving Watson to manage the aftermath, both professional and emotional, on his own.
For viewers following the series, Watson season 2 remains available to stream on CBS and Paramount+, with new episodes airing every Monday at 10 pm.
